Water heater and purifier.



D. DONOHUE.

WATER HEATER AND PURIPIER.

APPLICATION FILED JUNE 7, 1913.

1,091,565. Patented Mar.31,1914

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r 0 Z i 74 I [3] '1 1 INVENTEIR WITNEEEJEEI MMGQ Y flaw ATTURNEY:

COLUMBIA PLANOGRAPII CQ-JVASHINGTON. 1: c4

DANIEL DONOHUE, OF BUFFALO, NEW YORK.

WATER HEATER AND PURIFIER.

T 0 all whom it may concern:

Be it known that I, DANIEL Doxorinn, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Water Heaters and Purifiers, of which the following is a specification.

This invention relates to a water heater and purifier which is more particularly designed for heating and purifying the feed water for boilers by means of steam.

It is the object of this invention to produce an apparatus of this character whereby greater purifying and heating efficiency is obtained for a given size of apparatus and a given quantity of steam without increas ing the cost of the apparatus.

In the accompanying drawings: Figure 1 is a vertical section of an apparatus embodying my improvements. Fig. 2 is a horizontal section thereof taken in line 2-2, Fig. 1.

Similar characters of reference indicate corresponding parts in both figures.

1 represents the outer inclosing shell or casing of the apparatus which may be of any suitable construction but which as shown in the drawings preferably comprises an upright cylindrical body 2 and upper and lower heads 3, at secured to the upper and lower ends of the body so as to form the top and bottom of the shell. Within this outer shell is arranged a partition which divides the space within the shell into an ascending passage 5 and a descend ing passage 6. The lower ends of these two passages are disconnected from each other while the upper ends thereof are connected or in communication with each other. This partition in its preferred form comprises a horizontal lower section 7 extending inwardly from one side of the outer shell to av point located about centrally of the shell, and a vertical upper section 8 extending upwardly from the inner end of the horizontal section. The upper and lower sections of this partition are united at their edges with the side wall or body of the shell so as to form a complete separation between the intermediate parts of the passageways and the lower ends thereof. The lower section of the partition is arranged at a distance from the bottom of the shell and the upper end of the upper section thereof stops short or terminates at a distance from the Specification of Letters Patent.

Application filed June 7, 1913.

Patented Mar. 31, 1914.

Serial No. 772,327.

top of the shell so that the ascending passage 1s substantially of L-shaped form while the descending passage is straight, so far as the division of the space within the shell by the partition is concerned.

9 represents the supply pipe or inlet for the feed water which opens into the lower end of the ascending passage preferably at a point below the horizontal section of the partition, as shown in Fig. 1. The inner end 10 of this inlet pipe preferably turns upwardly within the lower part of the ascending passage so that the water is compelled to make a turn before it can enter the ascending passage.

11 represents the water delivery pipe or outlet which communicates with the lower part of the descending passage and is adapted to deliver the water to the boiler which is to be fed or other place of consumption. The inner end 13 of the water outlet pipe is preferably turned downwardly and is normally below the water line within the shell so as to form a trap which prevents any foreign substances which may be floating on the water from passing through the same to the boiler.

12 represents a steam inlet or supply pipe which connects with the upper part of the shell so as to communicate with the upper ends of the ascending and descending pas sages therein.

As the water passes from the supply pipe upwardly through the ascending passage and thence downwardly over the upper edge of the partition and downwardly through the descending passage to the outlet pipe the same is acted upon by the steam admitted to the upper part of the shell whereby the water is not only heated but any impurities which are contained therein and which are separated therefrom by heat will be precipitated. In order to equalize the pressure of the steam against the water in the outlet pipe an equalizing pipe 14 is provided which extends from the inner end of the outlet pipe 11 upwardly to a point above the water line. By this means the steam pressure on the water entering through the lower end of the outlet pipe and the pressure upon the water within this outlet pipe are equalized and any foreign matter which may be floating upon the surface of the water is prevented from being forced out through the outlet pipe to the boiler.

vVithin the ascending and descending passage.

sages of the shell are arranged a plurality of baffles which are so arranged that the water in passing through these passages is compelled to take a tortuous course and thereby prolong the path of the water through the apparatus so as to increase the heating effect of the steam on the same as well as the effect of separating any impurities contained therein. For this purpose the bafiies 15 in the ascending passage are arranged in the form of two tiers, the baffles of one tier alternating with, those of the other tier in the ascending passage and inclining from one side of this passage downwardly toward the other side while the baffies of the other tier in this passage incline downwardly from the opposite side of this passageway and overhang the bafliescof the first mentioned tier. In this way a zig-zag path for the water is provided as the same rises through the ascending passage and a pocket or trap is formed on the underside of each of the baflies 15 which is adapted to separate any oil which may be carried upwardly by the water, while any solid precipitated impurities in the water will fall upon the upper sides of these baffles and slide successively downwardly from one baffle 15 to another and finally drop upon the bottom of the shell. Thebaflies 16 in the descending passage of the shell are arranged horizontally and in two tiers, the baffles in one tier extending laterally from one side of the descendingpassage and alternating with the baffles of the other tier in this passage while the baffles of the last mentioned tier project laterally from the opposite side of the descendingipass'age and overhang the baffles of the first mentioned tier, thereby forming a zig-zag path for the water as it passes downwardly through the descending passage to the water delivery pipe.

For the purpose of removing the sediment, oil and other impurities from the ascending passage of the shell a blow-off pipe 17 is arranged in the bottom thereof which is provided with a valve 18 so that upon opening this valve the water will be drained from the ascending passage together with the impurities which have been separated from the water and accumulated in this pas- The water may also be drawn ofi from the lower end of the descending pas sage'for removing any sediment or impurities accumulated therein by means of a blow-off pipe 19 connected with the lower end of the descending passage and provided with a valve 20, whereby the discharge of water and impurities through the last mentioned blow fi pipe may be controlled.

By providing the interior of the shell with a partition of the form shown so as to produce an ascending and adescending passage for the water, the course of the latter is considerably prolonged, and this prolongation of the water path is still further increased by the addition of the staggered bafiies so that the maximum heating and separating or purifying effect of the steam upon the water is obtained during the course of the water through the apparatus. This construction of water heater and purifier permits of obtaining a much greater capacity for a given sized machine and also a greater heating and purifying effect for a given quantity of steam as compared with machines of this character heretofore in use.

I claim as my invention:

1. A water heater and purifier comprising an outer shell, a partition arranged within said shell and dividing the space within the same into ascending and descending water passages which are connected at their upper ends while their lower ends are disconnected, a water inlet at the lower end of said ascending passage, a water outlet at the lower end of said descending passage, a steam inlet at the upper ends of said ascending and descending passages, and baffles arranged in said passages.

2. A water heater and purifier comprising an outer shell, a partition arranged within said shell and dividing the space within the same into ascending and descending water passages which are connected at their upper ends while their lower ends are disconnected, a water inlet at the lower end of said ascending passage, a water outlet at the lower end of said descending passage, a steam inlet at the upper ends of said ascending and descending passages, a plurality of battles arranged in the form of two tiers in said ascending passage, the baffles in one tier alternating with those of the other tier and inclining downwardly from one side of said ascending passage'and the battles of the other tier inclining downwardly from the opposite side of the ascending passage and overhanging the baffles of the first men tioned tier, and a plurality of horizontal baflies arranged in the form of two tiers in the descending passage, the horizontalbaffies in one tier alternating with those of the other tier of horizontal battles and projecting laterally from one side of the descending passage, and the other tier of horizontal baffies projecting laterally from the opposite side of said descending passage.

3. A water heater and purifier comprising an outer shell, a partition arranged in said shell and having a lower horizontal section extending inwardly from one side of the shell at adistance from the bottom thereof to the central part of the space withing the shell and a vertical upper section extending upwardly from the inner end of said horizontal section and terminating short of the top of the shell, thereby dividing the space Within the shell into an L- Witness my hand this 5th day of June,

shaped ascending passage, and a straight de- 1913.

scendinv assa 'e, a Water inlet at the lower end of asc ending passage, a Water out- DANIEL D ONOHUE' 5 let at the lower end of said descending pas- Witnesses:

sage and a steam inlet at the upper ends E. M. GRAHAM,

of said ascending and descending passages. ANNA HEIGIB.

Copies of this trade-mark may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

